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Reply With Quotewaxey (07-27-2010)
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Administrator
admin should be listened to
The Truth Behind HDMI 1.4a
Way back on May 28, 2009, HDMI Licensing released the HDMI 1.4 spec. But wait, it's less than a year later (March 4, 2010) and here comes HDMI 1.4a. The big change from 1.4 was that 1.4a mandated two new 3D formats for broadcast on top of game and Blu-ray content. While some manufacturers would like you to believe that only their receivers/products sporting HDMI 1.4a will handle these formats, is it true? Depends.
Discuss "The Truth Behind HDMI 1.4a" here. Read the article.
waxey (07-27-2010)
Full Audioholic
ratso should be listened to
"The real concern should be for people with new 3D displays. They are going to want to make sure that their display will support all four of the 3D formats in order to take advantage of, in particular, any broadcast 3D possibilities that may come up in the near future."
another harsh reminder. perhaps you should add this to the 10 commandments, Tom: thou shall not be an early adopter.
samsung PN50B550, Oppo BD-80, Wii, PS3 Slim, Xbox 360, mac mini HTPC, Denon AVR-4311CI, and Axiom QS8 surrounds, dual Rythmik F15 subs, Salk HT2-TL's, selah sardonyx center.
Speaker of the House
Tom Andry should be listened to
Actually, it should read, "If thou art an early adopter, thou shalt not complain when HDMI or Apple screws you... 'cause they will."
Tom Andry
Associate Editor, Audioholics
Pursuing the humor in audio & video...
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3db (05-11-2010),BMXTRIX (05-05-2010),its phillip (05-05-2010),krzywica (07-27-2010),skers_54 (05-05-2010),Stereodude (05-05-2010)
Audioholic Samurai
its phillip should be listened to
Very true, and applies to a lot of other tech as well.Originally Posted by Tom Andry
（╯°□°）╯︵ ┻━┻
Audioholic Spartan
BMXTRIX should be listened to
It would be really nice to know if our existing HDMI 1.3 cables will support all the 3D aspects of the new format and have that properly covered for our expectations. I've got more than a few HDMI 1.3 cables which I would like to keep using for my installations, but I don't want to install, or use, outdated cabling.
It's worth noting that I spoke with Emotiva and they indicated that their current pre-pro is going to be firmware updated for HDMI 1.4 specifications, so anyone with one, or looking to buy, should be covered for 3D.
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington DC, Northern VA, and MD area.
Senior Audioholic
Stereodude should be listened to
None of the data I've seen shows any sort of increased video bandwidth requirement between the high bandwidth 1.3 (340MHz) and 1.4. So a high bandwidth 1.3 cable (340MHz) should do 3D just fine. However, it won't do Ethernet or offer the audio return channel.
Audioholic Chief
JohnA should be listened to
From what I understand, the "1.3" cable will work for all features of "1.4" including the Ethernet channel and the Audio Return, because it is using the 4 TMDS pairs for those features, the cables construction does not change only the chips for the transmitter and receiver are changing.
America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves. --Abraham Lincoln
Senior Audioholic
Stereodude should be listened to
That is definitely not correct. They added an additional TMDS pair in HDMI 1.4 called HEC Data into the specification that is used for Ethernet (Home Ethernet Channel).
Prior to HDMI 1.4:
Pin 14: Reserved
Pin 19: Hot Plug Detect
HDMI 1.4/1.4a:
Pin 14: HEC Data-
Pin 19: Hot Plug Detect / HEC Data+
I'm not sure where / how the return audio is implemented. My guess would be on the CEC/DDC serial wires so a 1.3 cable will work for that feature.
So, while HDMI 1.3 cables may have pin 14 electrically connected end to end, unless they used shielded twisted pair wiring between pin 14 and 19 equivalent to the STP wiring on the other TMDS channels, a HDMI 1.3 cable is not going to work for HDMI 1.4's Ethernet because the wiring won't adequately pass the high speed signals sent over those pins.
BoredSysAdmin (05-10-2010),Clint DeBoer (05-10-2010)
Audioholic Chief
JohnA should be listened to
OK so it looks like you only need a new cable IF you want to use the Ethernet channel... Right?
America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves. --Abraham Lincoln
Senior Audioholic
Stereodude should be listened to
That's basically what I said before.
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